My reference to specific retailers pricing is not an endorsement of that retailer. Vendors such as solidsignal.com, summitsource.com, amazon.com, 3starinc.com, frys.com, newegg.com, bestbuy.com... and on and on... are all worth considering when shopping.

As a general rule I am inclined to recommend non-amplified indoor antennas. I won't go so far as to say, "Never consider an amplified antenna." However, my opinion is that if signal conditions are strong enough to make an indoor antenna worth your consideration, use of any sort of amplifier is generally not needed. Amplifiers can be overloaded by strong signals, at which point the quality of the received signal will be reduced to the point were reliable reception is affected. Amplified antennas also cost more... but rarely give you any additional benefit that can be observed on the TV screen.

Most rabbit-ear style antennas have adjustable length rods that are intended to receive VHF frequencies. Here is a list of the estimated length for each VHF channel.

For 1/4" diameter dipole rods
Estimated length of each rod
Calculated using 4NEC2

Essentially the same type antenna as the ANT-111 and other similar 'rabbit ears', with the addition of a front panel adjustment knob which presumably switches element sections in or out of the circuit. While not necessarily a gimmick, the addition of this 'variable' may needlessly complicate the operation and adjustment of an antenna that could otherwise be set and then left alone.

Capable of reception of VHF and UHF signals (CH-2 through 69) when signals are strong and not subject to multipath, adjacent or co-channel interference.

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If the well is dry and you don't see rain on the horizon, you'll need to dig the hole deeper. (If the antenna can't get the job done, an amp won't fix it.)

Be careful to avoid confusing this antenna with the HDTVa which includes a built in amplifier. If signal conditions are strong enough to use an indoor antenna, an amplifier is generally not needed and in many cases, a source of trouble due to signal overload.

Capable of reception of VHF and UHF signals (CH-2 through 69).

The performance on Channel 2 through 13 is about the same as most other 'rabbit ear' style antennas, minimal gain and minimal directivity. Expect virtually the same VHF reception in both directions perpendicular to the VHF rods.

This antenna does offer some gain on UHF channels 14 through 69. The antenna will be more sensitive to UHF stations in the direction the antenna is pointed. (The longest wing like elements are the back, the shortest wing like elements are the front of the antenna.) The modest gain also results in the antenna having the ability to reject some multipath interference.